Johann Georg Tralles

Johann Georg Tralles (15 October 1763 – 19 November 1822) was a German mathematician and physicist.

He was born in Hamburg, Germany and was educated at the University of Göttingen beginning in 1783.

In 1798 he served as the Swiss representative to the French metric convocation, and was a member of its committee on weights and measures.

[1] He was the inventor of the alcoholometer, a device for measuring the amount of alcohol in a liquid.

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